US4757133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Physiologically active peptide
Assignee: Eisai Co Ltd
•
Filing: 1987-04-06
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Granted: 1988-07-12
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Expires: 2007-04-06
Abstract
Abstract A peptide is novel and useful for the bronchodilative activity and the hypotensive activity, having the following structure: ##STR1## (wherein X is Met or Leu; and Y is OH, Lys-OH, Arg-OH, Lys-Arg-OH, or Lys-NH 2 when X is Met, or Y is Lys-NH 2 , Lys-OH, or Lys-Arg-OH when X is Leu).
Inventors
- 👤 Osamu Ito
- 👤 Shinro Tachibana
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:36
CPC Classifications
C; C07; C07K; C07K14/00; C07K14/435; C07K14/575; C07K14/57563; A; A61; A61P; A61P11/00; A61P11/08; A61P9/00; A61P9/12; A61K; A61K38/00; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/55; Y10; Y10S; Y10S930/00; Y10S930/01; Y10S930/17
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
33 words
A peptide having the primary structural formula: ##STR6## in which X is Met and Y is OH, Lys-OH, Arg-OH, Lys-Arg-OH or Lys-NH2 or X is Leu and Y is Lys-NH2, Lys-OH or Lys-Arg-OH.
Claim 2
Dependent Claim
33 words
A peptide having the primary structural formula: ##STR6## in which X is Met and Y is OH, Lys-OH, Arg-OH, Lys-Arg-OH or Lys-NH2 or X is Leu and Y is Lys-NH2, Lys-OH or Lys-Arg-OH.
Claim 3
Dependent Claim
21 words
A peptide as claimed in claim 1, in which X is Met and Y is OH, Lys-OH, Arg-OH, Lys-Arg-OH or Lys-NH2.
Claim 4
Dependent Claim
19 words
A peptide as claimed in claim 1, in which X is Leu and Y is Lys-NH2, Lys-OH or Lys-Arg-OH.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-07-12 | 1992-01-11 | 1992-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-12 | 1996-01-11 | 1996-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-12 | 2000-01-11 | 2000-07-12 | $7700.00 | Window Closed / Lapsed |